#2643: Cosmologist Gift explain

[A picture of a box with writing on one side. The box’s lid is slightly hanging off the right edge of the box so you can see inside. The inside of the box is black.]

30,000 neutrinos

Freshly produced

Plus 4 zeptograms

of dark matter

[Caption below the panel]:

Cosmologists are easy to shop for because you can just get them a box.